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All Journal Gema Agro WICAKSANA: Jurnal Lingkungan dan Pembangunan

I Made Kawan

Program Studi Manajemen Sumber Daya Perairan, Fakultas Pertanian, Universitas Warmadewa

Author-ID : 4073882

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture

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Analisis Status Trofik Dan Struktur Saprobik Fitoplankton Di Bendungan Telaga Tunjung, Kabupaten Tabanan, Bali I Gede Pransidi; Ni Made Darmadi; I Wayan Arya; Dewa Gede Semara Edi; I Made Kawan
GEMA AGRO Vol 25 No 1 (2020)
Publisher : Fakultas Pertanian, Universitas Warmadewa

Plankton is instrumental in the aquatic ecosystem, plankton can be an indicator of fertility and pollution. The quality of a water especially the flooded waters can be determined based on the fluctuations of the plankton population that will affect the trophic levels of the waters. The quality of a water can be measured by knowing the value of the Saprobic Index (SI). The Saprobic index is an index that closely relates to the pollution level. This research aims to determine the level of fertility and pollution levels in the waters of Telaga Tunjung Dam, based on the status of Trophic and Saprobic's structure of Phytoplankton, knowing the relationship (linkage) of trophic status and structure Saprobic phytoplankton with variable water quality in Telaga Tunjung Dam. The methods of study used are descriptive methods of case study. The research was conducted on five stations with four repetitions. Plankton sampling performed actively using plankton net with mesh size 60 μm diameter 25 cm. Based on the results of the status of the trophic waters in Telaga Tunjung Dam is at the head of high Water Fertility (Eutrofik). The pollution level is mild to moderate water with a saprobic index from 0,739 to -0,583. The trophic level relationship and the saprobic structure with the water quality variable show that good water quality affects the abundance of high phytoplankton and mild to moderate pollution levels.

Pengaruh Pemberian Kombinasi Pakan Pelet Dan Pakan Alami Terhadap Pertumbuhan Benih Ikan Gabus (Channa striata) Agus Juliantara; Dewa Gede Semara Edi; I Made Kawan
GEMA AGRO Vol 25 No 2 (2020)
Publisher : Fakultas Pertanian, Universitas Warmadewa

Snakehead fish (Channa striata) is a freshwater fishery commodity in Indonesia which has a high protein content. Many studies on the benefits of snakehead fish have resulted in an increase in the amount of demand for these fish. One of the production factors that support fish farming is feed. The snakehead fish seeds have an average length of 2 cm, with rudimentary digestive organs. Therefore, the most suitable feed as seed feed is natural food. Commonly used natural feed is water fleas (Daphnia sp.) and silk worms (Tubifex sp.). This study aims to determine the effect of a combination of feed on the growth of snakehead fish seeds and to determine the combination of feed that gives the highest growth in snakehead fish seeds. This research was conducted at the Fisheries Resources Development Laboratory, Warmadewa University for 60 days, from March to April 2020. The method used in this study was an experimental study using a completely randomized design (CRD) with six treatments and three replications. The analysis used in this study was Analysis of Variance (ANOVA), and continued with the Least Significant Difference (LSD) test. The results showed that there was an effect of combination feeding on the growth of snakehead fish as indicated by the increase in absolute weight and length. And the sixth treatment is a combination of feed that provides the highest growth in snakehead fish seeds.

Struktur Komunitas Perifiton pada Berbagai Jenis Substrat di Kolam Udang Galah (Makrobrachium rosenbergii de Man) Putu Darma Utama; Sang Ayu Made Putri Suryani; I Made Kawan
GEMA AGRO Vol 26 No 2 (2021)
Publisher : Fakultas Pertanian, Universitas Warmadewa

This study aims to determine the species composition, abundance and community structure of periphyton based on biological indices found in various types of substrates in giant prawn ponds (Macrobrachiun rosenbergii de Man). This research was carried out in July-August 2020 in the POKDAKAN Mina Anakan Jepun culture pond, Bebetin Village, Sawan District, Buleleng Regency and identification of periphyton was carried out in the Agricultural Analysis Laboratory, Faculty of Agriculture, Warmadewa University. This study used experimental methods and the data obtained were analyzed descriptively quantitatively. The substrates used are bamboo substrate, palm oil substrate, and PVC pipe substrate with a diameter of 5 x 10 cm2. Periphyton sampling was carried out once every 7 days for 28 days, namely at 07.00-09.00 WITA. The abundance of periphyton on bamboo substrates ranged from 31,338-62,828 ind/cm2, on palm sugar substrates between 33,936–47,083 ind/cm2, and on PVC pipe substrates ranging from 39,592-71,236 ind/cm2. The diversity index value on bamboo substrates ranged from 2.33-3.00, on palm substrates ranged from 2.42-2.80, on PVC pipe substrates ranged from 2.72-2.94. The uniformity index of periphyton on bamboo substrates ranged from 0.72-0.82, on palm oil substrates ranged from 0.70-0.80, and on PVC pipe substrates ranged from 0.81-0.83. The dominance index on bamboo substrates ranged from 0.10-0.19, on palm oil substrates ranged from 0.10-0.21, and on PVC pipe substrates ranged from 0.08-0.10.

Pengaruh Pemberian Pakan Yang Berbeda Terhadap Pertumbuhan Dan Sintasan Juvenil Udang Galah (Microbachiium Rosenbergii De Man) Luh Saras Maheswari; Dewa Gede Semara Edi; I Made Kawan
GEMA AGRO Vol 27 No 1 (2022)
Publisher : Fakultas Pertanian, Universitas Warmadewa

The gaff (macrobrachium rosenbergi DE man) is a type A highly cultivated freshwater shrimp that is kept in freshwater pools, lakes, and even in the ebb and flow of upstream and downstream. The stick shrimp has a larger size than other freshwater shrimps, which are relatively slow, so it takes a natural expert to increase growth and survive the natural food-fodder fodder worms that are used in Hong Kong worms and silk worms. The study is aimed at seeing how different types of feeding different types affect the growth and survival of the spear shrimps. This research was done in br. The full - time ministry of October 2020 to November 2020. The method used in this study is an experimental method with a full random design study (ral) With 5 (5) treatment and 3 (3) times deuteronomy. Analyze which Used in the study is a variable analysis (anova), and followed by UI BNT Studies have shown that there has been an effect of feeding on the growth and survival of the spear's prawn, an increase in absolute weight and absolute length Juvenile spear shrimp.

PKM KELOMOK TANI IKAN DI DESA BEBETIN, KECAMATAN SAWAN, KABUPATEN BULELENG PROVINSI BALI Dewa Nyoman Sadguna; I Made Kawan; Ni Made Darmadi
WICAKSANA: Jurnal Lingkungan dan Pembangunan Vol. 3 No. 2 (2019)
Publisher : Lembaga Penelitian, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/wicaksana.3.2.2019.1-20

Kegiatan Program Kemitraan Masyarakat (PKM) dengan Kelompok Pembudidaya Ikan Mina Anakan Jepun dan Unit Pembenihan Rakyat (UPR) di Desa Bebetin, Kecamatan Sawan, Kabupaten Buleleng adalah berdasarkan kebutuhan kelompok tani mitra untuk memproduksi benih ikan Nila baik secara kuantitas maupun berkualitas melalui penerapan teknologi tepat guna yaitu pemijahan ikan menggunakan “Kantong Jaring Tenggelam” dan panen benih menggunakan “Jaring Gelar” serta penerapan manajemen administrasi kegiatan kelompok pada kelompok mitra. Teknologi ini sangat diharapkan mengingat sampai saat ini kelompok belum mampu memenuhi kebutuhan benih ikan nila untuk pembudidaya ikan KJA di Danau Batur. Kelompok mitra yang telah diberikan penyuluhan & diskusi, pelatihan manajemen administrasi kegiatan kelompok dan praktek pemijahan ikan penggunakan “kantong jaring tenggelam” dan praktek panen benih menggunkan “jaring gelar”, telah mengikuti kegiatan dengan serius dan 95 persen (%) peserta mampu menenerapkan teknologi tepat guna yang telah diprogramkan. Hasil praktek penggunakan alat pemijahan dengan “kantong jaring tenggelam” dan penen benih dengan “jaring gelar”, dapat menghasilkan benih dengan daya hidup 99% dimana sebelumnya hanya bisa mencapai kurang dari 50%. Demikian pula benih yang dikirim sampai kepada konsumen benih (para Pembudidaya ikan di Danau Batur) dapat mecapai daya hidup 100% dibandingkan sebelumnya maksimal mencapai 70%. Kantong Jaring Tenggelam, Jaring Gelar, manajemen Kelompok

Co-Authors Agus Juliantara Dewa Gede Semara Edi Dewa Nyoman Sadguna I Gede Pransidi I Wayan Arya Luh Saras Maheswari Ni Made Darmadi Putu Darma Utama Sang Ayu Made Putri Suryani

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